aC leak caused wall mold: DIY clean or call pro?« Back to Previous Page

That damp smell and visible mold spreading from an AC leak is a common issue in Dubai due to our high humidity and constant AC use. The size you describe—a meter across behind furniture—means this has been a persistent moisture issue and is not a simple surface problem.

Bleach is ineffective on porous surfaces like drywall and plaster; it only bleaches the surface color without killing the root structure. Scrubbing can also aerosolize spores, potentially spreading them into the room. For a patch that large and in a bedroom, a professional assessment is strongly recommended.

The core issue is the AC leak, which must be fixed first. Any remediation is temporary if the moisture source remains. A reputable company will first identify and stop the leak's origin before addressing the mold.

Professional remediation for a one-meter area typically involves containment to prevent cross-contamination, HEPA-filtered air scrubbing, safe removal of affected porous materials if necessary, and antimicrobial treatment. The goal is to return spore counts to safe, ambient levels, which should be verified with post-remediation testing.

In Dubai, look for providers who follow IICRC S520 standards for mold remediation and can provide a lab report confirming the job's effectiveness. This verifiable result is what separates a proper remediation from a superficial cleaning.